Safety appliance for ammonia-compressors.



A. L. BROWN. SAETY APP -ANGE POR AMMONIA GOMPRESSORS.

APPLGATION FILED JAN. S0, 19111.

2 SHEETS-SHEET l.

l Patented oet. 6, 1914.

A, L. BROWN.

SAFETY PPLN FOR AMMONIA GOMPRESSORS. m AHLIGATIN FILED JAN. 3o, w14, ji, l jl @logs/2,9 Patented Get. 6, 1914i..

2 SHEETS-SHEET 2,

nnae'za ond valve, a loose collar also mounted on said valve stem and arranged-between the two adjustable collars, an arm rigidly connected to the governor and extending below the loose collar, and a spring interposed between the lower adjustable collar and the arm from the governor, whereby the second valve is adjustably controlled by the governor, and pipes leading from the pump cylinder and the first piston valve casing to the easing of the second piston valve, sald latter valve normally cutting off flow from one pipe to the other in the casing thereof, but

adapted to be moved so as to establish communication between said pipes when the governor reaches the predetermined speed.

5l The combination with a compressor, of

o. piston valve, means for shutting down the engine operatively connected to the piston valve, a governor, a secondz piston valve controlled by the governor, and pipes leading from thesource of supply of steam for running the engine and from the first piston valve casing to the casing of the second piston valve, said latter valve normally cutting off ow from one pipe to the other in the casing thereof, but adapted to be moved so as to establish communication between said pipes when the governor reaches a predetermined speed. ,l

6. The combination with a compressor, of a piston Valve, means for shutting down the engine operatively connected to the piston valve, a governor, a second piston 'valve controlled by the governor, and pipes leading from the pump cylinder of the compressor, from the source of supply of steam for running the engine and from the first piston `valve casing to Athe casing of the second piston valve, said latter valve normally cuttingo How from either of the pipes leading from the steam supply source or from the pump cylinder to the pipe leading from the casing of the lirst piston valve, but adapted to be moved so as to establish communication between said pipes when the governor reaches a predetermined speed.

7. The combination with a compressor, of a piston valve, a pipe leading from the pump cylinder of said compressor to thecasing of the piston valve, a safety valve in said pipe, a lever operatively connected to said piston valve, means operatively connected with. said lever for shutting down the engine when said lever is moved by the piston valve, a governor connected to said lever, a spring for yieldingly supporting the governor as and for the purpose specied, and a second valve controlled by the governor, and means connected to said second valve for supplying an actuating duid to the first valve when the engine starts to run away. i

ln testimony whereof I have signed my name to this specification in the presence of two attesting witnesses.

ALBERT L BRGWN.

Witnesses E. E. JOHNSON, J. H. Fono. 

